Hi developers and users,
Is that possible to dump the flux value at each node? Taking the thermal
problem
at ex10, the independent variable u (Temperature) could be generated in the
postprocessing data, while how to obtain the other dependent variable,
such as
flux(gradient of the temperture).
I have been thinking two methods without sure to solve this.
One method is deriving the mixed weak form and the flux is the second
variable,
then the flux could be dumped as the independent variables. The cost is
having
to derive the mixed form and may leading to the instability if the
constrains are
ill set.
Another method is adding flux variables directly with the function
system.add_variable ("gradT_x", FIRST), then plugging additional flux
computing codes code in the element part.
The later one is my preference, but I don't know if it is on right way.
So would
you experts please give me some advice? Thanks!
Liang
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